Improvement in fruit-jars



plane. Ution of the water or other heating medium UNITED STAT-Es PATENTOFFICE.

JOHN J. SQUIRE, OF VIND'SOR, LOCKS, CONNECTICUT.

IMPROVEMENT IN FRUIT-JARS.

j Specification forming part of. ,Letters Patent 1510.46.72@ dated March'7,186.5'.

To @vll zii/'hom lif may con-cern,.- -Bet known that I, JOHN' J SQUIRE,of

Windsor Locks, in the eountyof Hartford and `do hereby declare thatthefol1owing is a full,

clear, and exact description thereof, which will enable those skilled inthe art to make and use the same, reference being had to the acecompanying drawings, forming part of this specification, in which.-'

Figure-1 is an elevation o f a jar constructed after my invention,hereinafter described. Fig. 2 is a view of the bottom. Fig. 3 is'a viewof its cover. Fig. 4 is a vertical section ofthe top of the-jar.

' -Similar letters of reference indicate correspondin'g parts. y Thisimprovement embraces ltwoparticu- :larsone being the providing'thebottom of jars vin which fruits, meats', or -.othersub stances are to bepreserved with pedestals or feet, and the other consisting in a noveldevice'- forsecuring the cover. A represents a fruit-jar constructedafter my improvements.

In putting up fruits and other substances for preservation, the jar isplaced in a vessel containing hot Waterl the temperature of which iscarried to a suitable-height, so as to heat its contents and expandthem, and also to drive off a portionot' the liquid-contained therein inthe form of steam or vapor, so that afterward, when the jar is coveredand its contents allowed to cool, a partial vacuum 4will be madetherein. -both by the contraction portion ,of its liquids.

When'- jars with smooth or flat-bottoms are used their bottom surfacesare everywhere in contact with the bottom surface of the boiler in whichthey are placed'to be heated, as above explained, and consequently anycirculation of thehot water over the bottoin'of the jar is prevented,and glass jars are liable to be broken from this cause.A The sameremarkis` true-of those jars whose bottoms are 'concave in the center and yettheir outer portions Vor edges are in the same horizontal In order Vtosecure .an active circulaof said contents and by reason ofthe lossofaunder. the bottom, like that which takes place aboutits.` sides, I haveformed vpedestals or feed a onits under surface, as' seen in thedrawings, where they are shown four innumceive the edge Vof the coverG.` The low-er edge of the cover has`a' rabbet4 (lettered B) formed onit, converse in form, and'fltting. to

the rabbet or shoulder Din then'eck of .the jar.' An elasticpacking-ring, b, isplaced' in the rabbet Bof the cover, which, when the'co`ver is in place, rests upon the base' of :the

shoulder D. lThe width of the ring ando'tfv the rabbets D and B are -tobe suehthatthe ring will be inclosed by the sides ofisai'd rabbets, sothat it shall not come in contact with the contents of the jar. 4

E represents atransverse locking-bar, turning upon a central pivot, e,and bearing upon inclined vsurfaces- 13" F', which, being perforated andof unequal height, may be used for the introduction oi` liquor after thejar vis closed, air escaping through theaperture f, l

While liquor entersthrough the, aperture j.

'The ends of the bar pass down through vertical grooves a a', and engagein a circular groove, a, Withinthe neck, Whenthe turning of the barcompresses the cover down upon, its seat by the .wedge-like action o'fthe inclined projectionsF F.

which, by engaging' in a recess, a, formed in .the neckof the jar withinthe rabbetD, keeps thecover from turning with the bar E.' i

I claim" as new and desire to secure by Letters Patent- 1. In jarsforpreserving fruits, meats, audother substances, forming-pedestals Qnthe bote' tom thereof, 4'so as toobtain a free circulation of theheating medium beneaththem when they are placed in such medium in theprocess of putting them up for market,tsubs tan= tiallyas described.

' 2. The cover C, formed with projections c F F', inthe describedcombination with the packing-ring b and lockingfbar E, for the purposesset forth.'4

Witnesses: JOHN J. SQUIRE.

CHAs. W. DnNsLoW, EDMUNDHrLLs c represents a projection upon-thecoverC',

